a-sync · November 5, 2019 07:44 · Jan 26, 2018 · Jan 25, 2018
diff --git a/.ssh\config b/.ssh\config
@@ -6,4 +6,3 @@ Host my-server
     Port 22
     User myuser
     Password mypassword
-
diff --git a/.bash_aliases b/.bash_aliases
@@ -0,0 +1,2 @@
+alias ssh=ssh-wrapper
+alias scp=scp-wrapper
diff --git a/.ssh\config b/.ssh\config
@@ -0,0 +1,9 @@
+# Allow specifying passwords for Host entries, to be parsed by ssh-wrapper.
+IgnoreUnknown Password
+
+Host my-server
+    HostName 10.20.30.40
+    Port 22
+    User myuser
+    Password mypassword
+
diff --git a/scp-wrapper b/scp-wrapper
@@ -0,0 +1,32 @@
+#!/bin/bash
+
+password=$(awk '
+BEGIN {
+    # Collect the SCP arguments as keys of a dictionary, so that we can easily
+    # check for inclusion.
+    for (i = 2; i < ARGC; i++) {
+        colonIdx = index(ARGV[i], ":")
+        if (colonIdx > 0) {
+            scpArgs[substr(ARGV[i], 1, colonIdx - 1)] = 1
+        }
+    }
+
+    # Only process the first argument; all others are the command-line arguments
+    # given to scp.
+    ARGC = 2
+}
+$1 == "Password" && inhost { print $2 }
+/^\s*Host\s/ {
+    if ($2 in scpArgs)
+        inhost=1
+    else
+        inhost=0
+}
+' ~/.ssh/config "$@")
+
+
+if [ "$password" ]; then
+    sshpass -p "$password" "$(which scp)" "$@"
+else
+    "$(which scp)" "$@"
+fi
diff --git a/ssh-wrapper b/ssh-wrapper
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+password=$(awk '
+BEGIN {
+    # Collect the SSH arguments as keys of a dictionary, so that we can easily
+    # check for inclusion.
+    for (i = 2; i < ARGC; i++) {
+        sshArgs[ARGV[i]] = 1
+    }
+
+    # Only process the first argument; all others are the command-line arguments
+    # given to ssh.
+    ARGC = 2
+}
+$1 == "Password" && inhost { print $2 }
+/^\s*Host\s/ {
+    if ($2 in sshArgs)
+        inhost=1
+    else
+        inhost=0
+}
+' ~/.ssh/config "$@")
+
+
+if [ "$password" ]; then
+    sshpass -p "$password" "$(which ssh)" "$@"
+else
+    "$(which ssh)" "$@"
+fi